Bridgestone Battlecross X20 Front Motorcycle Tire 90/100-21 57M

The Bridgestone Battlecross X20 Front Motorcycle Tire 90/100-21 57M is a bias-construction motocross front tire built in Japan for soft and varied terrain conditions. Bridgestone developed it alongside professional riders in top-level motocross competition, using that feedback to shape a redesigned block pattern with greater stiffness and edge component for stronger cornering grip and traction on muddy tracks, slippery sand, and softer ground. The X20 also incorporates Bridgestone's Castle Block technology, which extends the tire's useful range onto firmer terrain as well. It continues the lineage of the X30 and X40, and Bridgestone positions it for everyone from championship-level competitors to young riders just getting started in motocross.

This tire carries a size code of 90/100-21, where 90 is the section width in millimetres, 100 is the aspect ratio as a percentage of that width, and 21 is the rim diameter in inches. The rim diameter must match your wheel, and the full size code should match the code printed on the sidewall of the tire you are replacing. The load index is 57 and the speed rating is M, covering speeds up to 81 mph (130 km/h); your machine's specifications determine which load index and speed rating are required.

Specifications